https://matjournals.net/engineering/index.php/JoCNSDC <p><strong>JoCNSDC</strong> is a peer-reviewed journal in the field of Computer Science published by MAT Journals Pvt. Ltd. This is a print and e-journal dedicated to rapid publication of research papers based on all aspects of Cryptography and Coding, Privacy and Authenticity, Untraceability, Quantum Cryptography, Computational Intelligence in Security, Artificial Immune Systems, Biological and Evolutionary Computing, Reinforcement and Unsupervised Learning. It includes Autonomous Computing, Co-evolutionary Algorithms, Fuzzy Systems, Biometric Security, Trust Models and Metrics, Regulation, and Trust Mechanisms. Data Base Security, Network Security, Internet Security, Mobile Security, Security Agents, Protocols, Software Security Measures against Viruses and Hackers, Security and Privacy in Mobile Systems, Security and Privacy in Web Services, Service and Systems Design, and QOS Network Security are some areas that are covered under this journal title.</p> en-US Journal of Cryptography and Network Security, Design and Codes https://matjournals.net/engineering/index.php/JoCNSDC/article/view/3085 <p>Cryptocurrency is a modern form of digital money that works through blockchain technology. It allows people to send and receive money safely without using banks or any middleman. This paper explains how blockchain supports cryptocurrencies by keeping records safe, clear, and unchangeable. It also describes how cryptocurrencies like Bitcoin, Ethereum, Ripple, Litecoin, and Stablecoins work and what makes each one different. The study discusses how cryptocurrency is changing the way people handle money. It offers faster transactions, lower costs, and accesses to financial services for people who do not have bank accounts. At the same time, it looks at the problems that still exist, such as changes in coin value, security risks, high energy use, and unclear government rules. These challenges make it difficult for cryptocurrencies to become a regular part of everyday life. The paper also looks at new ideas such as smart contracts, decentralized finance (DeFi), and digital tokens that can represent real-world assets like property or shares. These new uses show that cryptocurrency is not only a form of digital money but also a tool that can change how people make agreements and share value. Overall, this paper helps readers understand how cryptocurrencies work, what benefits they bring, what problems they face, and how they may shape the future of money. It aims to show that blockchain-based digital currencies can make finance more open, faster, and more secure if used responsibly.</p> Yogita D. Sachdev Rutuja A. Panhalkar Swapnali V. Jagtap Copyright (c) 2026 Journal of Cryptography and Network Security, Design and Codes 2026-02-09 2026-02-09 1 7